And I think ROTS got those complaints mostly because they're cliche complaints at this point. They're so knee jerk in some cases that you can tell they were sorta just plugged in. It's less a comment on the movie and more a comment on the movie industry themselves. Everyone LOVES to wrap themselves in the "purity" and "nostalgia" flags, because who wants to argue against that, yunno?
But that's besides the point. The great movies are great on their own, and sequels and remakes don't tarnish that in any way unless you let them. And if other people let it, so what. That's their problem. I have more movies to watch and enjoy without worrying if some schmo in Sheboygan is having a conniption that the sequel to "Alien" isn't as good as the first one. I find I enjoy films a lot more if I divorce them from the competitive horserace aspect that causes people to act as if they're rooting for a pro-wrestler instead of appreciating a good film.